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Evidence for the transport of glutathione through ryanodine receptor channel type 1

被引：26
作者：
Bánhegy, G
Csala, M
Nagy, G
Sorrentino, V
Fulceri, R
Benedetti, A
机构：
[1] Univ Siena, Dipartimento Neurosci, I-53100 Siena, Italy
[2] Univ Siena, Dipartimento Fis & Med Sperimentale, I-53100 Siena, Italy
[3] Semmelweis Egyet, Orvosi Vegytani Mol Bol & Pathobiokem Intezet, Budapest, Hungary
来源：
BIOCHEMICAL JOURNAL | 2003年 / 376卷 / 03期
关键词：
cation channel; glutathione; lanthanum chloride; ryanodine receptor calcium channel type 1; sarcoplasmic reticulum;
D O I：
10.1042/BJ20031419
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
In the present study, we have investigated the role of RyR1 (ryanodine receptor calcium channel type 1) in glutathione (GSH) transport through the sarcoplasmic reticulum (SR) membrane of skeletal muscles. Lanthanum chloride, a prototypic blocker of cation channels, inhibited the influx and efflux of GSH in SR vesicles. Using a rapid-filtration-based assay and lanthanum chloride as a transport blocker, an uptake of radiolabelled GSH into SR vesicles was observed. Pretreatment of SR vesicles with the RyR1 antagonists Ruthenium Red and ryanodine as well as with lanthanum chloride blocked the GSH uptake. An SR-like GSH uptake appeared in microsomes obtained from an HEK-293 (human embryonic kidney 293) cell line after transfection of RyR1. These observations strongly suggest that RyR1 mediates GSH transport through the SR membranes of skeletal muscles.
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页码：807 / 812
页数：6
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